Samuel j



(NoModel.) Y

Y S. J. BENSON.

PIPE WRENCH.

No. 345,567. Patented July 13.1886.

UNITED STATESv PATENT OFFICE.

ASAMUEL J. BENSON, OF BOULDER CREEK, CALIFORNIA.

PIPE-WRENCH.

SPECIFICATICN forming part of Letters Patent No. 345,567, dated July 13, 1886.

Application filed May 6, 1886. Serial No. 201.402. (No model.)

10 all whom it may concern:

Be it known that I, SAMUEL J. BENSON, a citizen of the United States, residing at Boulder Creek, county ofSanta Cruz, and Stateof California, have invented a new and useful Pipe-Wrench, of which thefollowing isa speciiication.

My invention relates to improvements in pipe-Wrenches inwhich a serrated or grooved roller is attached to and rolls upon a segment of the periphery of a second roller, which is Xed-in a movablejaw, which adjusts and secures the position of the rollers. upon the shank or handle'of the wrench; and, further, in providing the movable jaw With a threaded spool engaging with a corresponding concave segment of a screw or thread out into the inner edge of the handle or shank,and in providing a cam on the opposite edge of the jaw, whereby the jaw maybe quickly set free or locked in the threads of the spool and shank; and the object of' my improvement is to provide a convenient and reliable tool for the purpose set forth. I attain this object by means of K the mechanism shown in the accompanying drawings, `in which- Figure 1 is a longitudinal section of the wrench as it appears when set on the pipe. Fig. 2 is a perspective view of the wrench in the same position.

Similar letters refer to similar parts in either view.

The general appearance, construction, and action resemble a common monkey-wrench, and,excepting the parts in actual contact with the pipe, may be so made. For general use, where frequent changes occur-in sizes of pipe and fittings, I prefer the plan herein shown for quick adjustment. The hooked lever A A forms and embraces at the left end the shaped solid jaw a, and from b to b the guidebar and threaded rack for the movable jaw B, the remainder being the necessary continuation ofthe lever terminating in ahand-hold. The movable jaw B slides freely upon the shank or guide-bar b b when the handle of the camv H is pushed outward, releasing the threaded spool C, the side plates and crossbar, c d, being so fitted and placed as to give the required movement.

D is a movable roller having a serrated, grooved, or otherwise indented face, and rolling upon the fixed roller E, which is provided With a corresponding face, this roller being set in asuitable opening in the end of the jaw B, and remains stationary until .it may be necessary to turn it as the projecting edges of the roller wear. These rollers are held in their places by means of the pins e f,.passing through them and the links F, the large end of the links F forming Washers to hold the roller E in place endwise, and also being provided with lips g g, into which the ends ofthe forked spring G are inserted, the opposite and fixed end of which is secured by means ot' the pin or screw h, which also passes through and forms a spindle for the threaded spool C. A pressure of the thumb upon the spring G throws the roller D back out of the way,when

necessary. The spring also assures contact'of the pipe and roller. The threaded spool C turns freely upon the spindle h, and is intended to receive the thrust of the rolle'r` D, commu nicated through the movablejaw B, as also to adjust it, as will be obvious from the drawings. The-materials employed in themanufacture are such as are commonly used for such tools.

The operation is as follows: The movable jaw B being placed in position, after sliding it along the guide-bar b b and locking it by means Vof the cam H, the wrench being placed upon the pipe I, and thevroller D being thrown out as far as will permit it to take a firm vhold on the pipe Vfrom .the pressure of the spring G and the. smallest movement of the handle, the roller D revolves upon the pipe, and upon the fixed roller E at the'same time, instantly filling the space and carrying the pipe as the movement continues. Aslight backward movement releases the roller, and

the spring G holds it in position for the next movement.

Having thus described my invention, what I claim, and desire to secure byLetters Patent, is-' 1. In a pipe-Wrench, a gripping-roller, D, attached to the jaw B, and revolving upon a xed roller, E, or its equivalent.

2. The combination of the iixed jaw and IOC the solid shank or handle A A with a mov In testimony whereof I affix my Vsignature in able jaw, B, secured to the same by means of the presence of two Witnesses. a cam, H, and adjustable threaded spool C,

f 4 4 Y T the gripping-roller D, and links F, the xed SAMUEL 'I' REASON 5 abutment-roller E, and the spring G, the wh 01e Witnesses:

constructed and arranged substantially as and A. D. HOLLIS,

for the purpose specified. J. W. CUNNINGHAM. 

